The value of K for the reverse reaction of \(3H_{2}(g)+N_{2}(g) < - > 2NH_{3}(g)\) is b. 2.35 x \(10^{-9}\)
To determine the value of K for the reverse reaction, we can use the relationship between the equilibrium constants of the forward and reverse reactions.
For the given reaction:
\(3H_{2}(g)+N_{2}(g) < - > 2NH_{3}(g)\)
The equilibrium constant for the forward reaction (K_forward) is given as 4.26 x \(10^{8}\).
According to the principle of microscopic reversibility, the equilibrium constant for the reverse reaction (K_reverse) is the reciprocal of the equilibrium constant for the forward reaction:
K_reverse = 1 / K_forward
Plugging in the value of K_forward, we have:
K_reverse = 1 / (4.26 x \(10^{8}\))
K_reverse ≈ 2.35 x \(10^{-9}\)
Therefore, the value of K for the reverse reaction is approximately 2.35 x \(10^{-9}\). Therefore, Option (b) is correct.
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Put the following events in the order for a digital recording to become sound waves through a speaker. put the first event at the top of your list.
The events in the order of top to bottom for a digital recording to become sound waves through a speaker include:
Sound is encoded on a digital recording as an electrical signal.The digital recording plays the sound as an electrical signal.The electric signal moves through a voice coil.The voice coil produces a magnetic field.Changing the magnetic field pushes and pulls on the diaphragm.What is Sound wave?This is defined as a pattern of disturbance caused by movement of energy along a medium.
The order of events which produces the sound heard by audience can be seen above.
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What is the name for a substance made of billions of oppositely charged ions
joined together?
Answer:
Ionic substance
Explanation:
An ionic substance is formed when oppositely charged ions link up to form an infinitely large lattice structure that can only be described in terms of unit cells.
Ionic substances may consist of billions of oppositely charged ions. Ionic substances are hard, have high melting and boiling points and do not conduct electricity in the solid state because the ions are not free in the solid state.
However, in solution or molten state, the substance conducts electricity since the ions which are the charge carriers are now mobile.
Name the following compounds. Do not use italics or boldface. a) N-CH2CH2CH3 = ______. b) NHCH2CH3= ______.
a) The compound N-CH₂CH₂CH₃ is named N-propylamine.
b) The compound NHCH₂CH₃ is named ethylamine.
To name these compounds, we follow the rules of IUPAC nomenclature for amines. Amines are organic compounds with a nitrogen atom bonded to one or more alkyl groups.
a) In N-CH₂CH₂CH₃, the nitrogen atom is bonded to a propyl group (CH₂CH₂CH₃). We name it by adding the prefix "N-" to the alkyl group's name and ending with "amine". So it is named N-propylamine.
b) In NHCH₂CH₃, the nitrogen atom is bonded to an ethyl group (CH₂CH₃). Following the same naming rule, we add the prefix "N-" to the alkyl group's name and end with "amine". So it is named ethylamine.
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H2 produced by the above reaction? Calculate the mass of NaCl required producing
35.5g of H2?
To produce 35.5g of H2, approximately 2055.49g of NaCl is required.
To calculate the mass of NaCl required to produce 35.5g of H2, we need to determine the stoichiometry of the reaction and use the molar mass of NaCl.
The balanced equation for the reaction is:
2NaCl + 2H2O -> 2NaOH + H2
From the balanced equation, we can see that for every 2 moles of NaCl, 1 mole of H2 is produced. We can use the molar mass of H2 (2.016g/mol) to convert the given mass of H2 into moles:
moles of H2 = mass of H2 / molar mass of H2
moles of H2 = 35.5g / 2.016g/mol
moles of H2 = 17.6 mol
Since the stoichiometry of the reaction is 2 moles of NaCl to 1 mole of H2, we can set up the following ratio:
moles of NaCl / moles of H2 = 2 / 1
Rearranging the equation to solve for moles of NaCl:
moles of NaCl = (moles of H2 * 2) / 1
moles of NaCl = (17.6 mol * 2) / 1
moles of NaCl = 35.2 mol
Now, we can calculate the mass of NaCl required using the molar mass of NaCl (58.44g/mol):
mass of NaCl = moles of NaCl * molar mass of NaCl
mass of NaCl = 35.2 mol * 58.44g/mol
mass of NaCl = 2055.49g
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Increasing temperature can
How many grams are in .395 moles of NaCl?
60.0 g of acetic acid (MW 60 g/mol) is placed in a flask and diluted with water to a final volume of 200.0 ml. What is the molarity of the solution? 0.00500M O 0.300 M 05.00 M 0.00300 M
Thus, the molarity of the diluted acetic acid solution is 5.0 M.
To determine the molarity of the acetic acid solution, we first need to calculate the number of moles of acetic acid present in the 60.0 g sample, and then divide this by the volume of the solution.
1. Calculate moles of acetic acid:
Moles = mass / molar mass
Moles = 60.0 g / 60 g/mol
Moles = 1.0 mol
2. Convert the volume of the solution to liters:
200.0 mL = 0.2 L
3. Calculate the molarity of the solution:
Molarity = moles / volume
Molarity = 1.0 mol / 0.2 L
Molarity = 5.0 M
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____ NaBr + ____ Ca(OH)2 ___ CaBr2 + ____ NaOH
Answer:
2 NaBr + 1 Ca(OH)2 ---> 1 CaBr2 + 2 NaOH
If I dilute 250 mL of 0.50 M lithium acetate solution to a volume of 750 mL, what will the concentration of this solution be?
Answer:
The right answer is "0.17 M".
Explanation:
The given values are:
Volume,
V₁ = 250 mL
V₂ = 750 mL
Molarity,
M₁ = 0.50 M
M₂ = ?
As we know,
⇒ \(M_1 V_1=M_2 V_2\)
or,
⇒ \(M_2=\frac{M_1 V_1}{V_2}\)
On substituting the values, we get
⇒ \(=\frac{0.50\times 250}{750}\)
⇒ \(=\frac{125}{750}\)
⇒ \(=0.17 \ M\)
This formula equation is unbalanced. Pb(NO3)2(aq) + Li2SO4(aq) Right arrow. PbSO4(s) + LiNO3(aq) Which coefficient should appear in front of LiNO3 in the balanced equation? 1 2 3 4
Answer:2
Explanation:
Answer:
2
Explanation:
A student sets up and solves the following equation to solve a problem in solution stoichiometry. Fill in the missing part of the student's equation.
A student sets up and solves the following equation to solve a problem in solution stoichiometry. The missing units are moles/L.
When requested to assess the division's units, we must consider that the units on the other side of the division will be canceled. In this case, considering the following dimensional analysis operation:
(0.63 mol) (1 mL/10⁻³ L)/(7.2mol/L) = 88. mL
Since they are used as both denominators and numerators, we can see that milliliters cancel each other out, resulting in moles/L as the final units.
Therefore, the missing units of equation (0.63 mol) (1 mL/10⁻³ L)/(7.2_) = 88. mL is moles/ L
Your question is incomplete but most probably your full question was
A student sets up and solves the following equation to solve a problem in solution stoichiometry. Fill in the missing part of the student's equation. (0.63 mol) (1 mL/10⁻³ L)/(7.2_) = 88. mL
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Identify the number of electrons
Atomic mass: 24
Atomic number: 12
-2 charge
Answer:
24 is the answer of this question
A covalent chemical bond is one in which:_____.a) outer-shell electrons of one atom are transferred to the inner electron shells of another atom.b) protons or neutrons are shared by two atoms so as to satisfy the requirements of both.c) the inner-shell electrons of one atom are transferred to the outer shell of another atom.d) electrons are removed from one atom and transferred to another atom so that the two atoms become oppositely charged.e) outer-shell electrons are shared by two atoms so as to satisfactorily fill the outer electron shells of both.f) an electron occupies a hybrid orbital located between the nuclei of two atoms.
Answer:
A.outer-shell electrons of one atom are transferred to the inner electron shells of another atom.
Explanation:
In covalent chemical bond, outer shell share pair of electrons to fill both atoms outer shell. Covalent bond can be polar and non-polar. Hydrogen and carbon bonding is example of non-polar bonds; while hydrogen bonding with chlorine is polar covalent bond example
Sonar stands for “sound navigation and ranging.” What assumption was proved wrong after the invention of sonar?
A.
The age of the ocean floor is variable.
B.
The ocean floor is featureless.
C.
The ocean floor is changing.
D.
The ocean floor is denser than continental crust.
The ocean floor being featureless was the assumption was proved wrong after the invention of sonar.
What is Sonar?This employs the use of sound propagation to measure the distance or presence of objects under the water.
This helped to show that the ocean floor had features such as canyons, mountains etc hence option B was chosen.
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at the concentration equilibrium constant for a certain reaction. here are some facts about the reaction: if the reaction is run at constant pressure, of heat are absorbed. some of the reactants are liquids and solids. the net change in moles of gases is .
To calculate the equilibrium constant for a reaction with heat absorbed, determine equilibrium concentrations and use the law of mass action.
At the concentration equilibrium constant for a certain reaction, heat is absorbed if the reaction is run at constant pressure. Some of the reactants are liquids and solids, and the net change in moles of gases is .
To calculate the equilibrium constant, we need to first determine the equilibrium concentrations of each species. We can do this by using the mass and moles of the reactants and products, the stoichiometric coefficients, and the net change in moles of gases.
Once we have the equilibrium concentrations, we can calculate the equilibrium constant using the law of mass action:
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the atoms in the molecule of water shown below are held together by which type of bond?
Answer:
Hydrogen bonding
Explanation:
In the case of water, hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. This is because forces of attraction between individual water molecules creates a bond known as a hydrogen bond.
A water molecule is held together by covalent bonds, with the oxygen atom forming a double covalent bond with each hydrogen atom.
As a result of the oxygen atom's greater electronegativity compared to the hydrogen atoms', a polar covalent connection forms, giving water its distinctive polarity. Due to the production of hydrogen bonds as a result of this polarity, water has a number of special characteristics, including a high surface tension, high boiling and melting points, and the capacity to dissolve a wide variety of compounds. The creation of a network of links between neighboring water molecules as a result of these hydrogen bonds adds to water's stability and enables it to function as a solvent for a variety of ions and polar molecules.
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A water molecule is held together by:
a. an ionic bond
b. a single covalent bond
c. a double covalent bond
d. a polar covalent bond
e. hydrogen bonds
what happens when thermal energy is applied to a substance?(1 point) responses its particles slow down. its particles slow down. its atoms gain kinetic energy.
Atoms of a substance gain kinetic energy, when thermal energy is applied to it. Therefore, option B is correct.
What happened to the kinetic energy of a molecule on applying thermal energy?When thermal energy is applied to a molecule, it increases the kinetic energy of the molecule. Thermal energy refers to the total energy associated with the random motion of particles within a substance.
The relationship between temperature and the average kinetic energy of a molecule is described by the kinetic theory of gases.
As thermal energy is added to a system, the average kinetic energy of the molecules increases. This happens because the energy is transferred to the molecules through collisions between them. Therefore, option B (atoms gain kinetic energy) is correct.
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1) pbo+co-->pb+co2 which type of reaction is this?
a) redox reaction
b) oxidation reaction
c) reduction reaction
d) none of the above
PbO + CO → Pb + CO₂
Oxidation States of the Elements
Reactants Products
Pb +2 0
O -2, -2 -4
C +2 +4
Since the oxidation state/number of Pb decreased, it is being Reduced.
Since the oxidation state/number of C increased, it is being Oxidized.
∴ this is a Redox Reactionwhat happpens when nitrogen fills its valence shell?
A. Three electrons are lost, creating N+3
B. Three electrons are gained, creating N-3
C. Three electrons are gained creating N+3
D. Three electrons are lost, creating N-3
what is irriversable change
Answer:
Paper burning
Explanation:
Bombardier beetles release a burst of hot chemical spray with a popping sound. The chemical is sprayed from a structure present under the belly of the beetles.
Which is the likely advantage of such a behavior?
It allows the beetles to attract mates.
It allows the beetles to move obstacles out of their paths.
It allows the beetles to escape from predators.
It allows the beetles to stay warm in cold conditions.
It allows the beetles to escape from predators
Rx Ephedrine sulfate (fz. pt = -0.13°C). 2%
Sodium chloride MW 58.5
Purified water qs ad. 30 mL
How much sodium chloride should be used to make this eye
solution isotonic with tears?
the answer is 22
The correct answer is the amount of sodium chloride needed to make this eye solution isotonic with tears is approximately 1.85 grams. Rounding it up to the nearest whole number gives us the answer as 2. Hence, the correct option is 22.
The given solution is a hypotonic solution as the solution's tonicity is lower than that of the tears. The tears contain 0.9% w/v of NaCl, which is isotonic with tears. So, to make the given solution isotonic, the amount of sodium chloride needs to be added.
The concentration of NaCl in tears is 0.9% w/v. Additional Information: We know that % w/v is the amount of solute present in grams per 100 ml of the solution. Therefore, 0.9% w/v means 0.9 grams of NaCl is present in 100 mL of tears.
To make 30 ml of isotonic solution, we can use the following formula: Equivalent weight of NaCl = 58.5/2 = 29.25 (as NaCl ionizes to give Na+ and Cl- ions)Moles of NaCl required to make 30 ml isotonic solution = 0.9 × 30 / 1000 = 0.027Moles of Na+ and Cl- ions present in 30 mL of isotonic solution = 2 × 0.027 = 0.054
A number of grams of NaCl needed to prepare 30 mL of isotonic solution is calculated as follows:0.054 g = (0.027 x 29.25 x X) / 1000Where X is the amount of NaCl required to make 30 mL isotonic solution. Solving this equation gives us: X = 1.85 g (approx). Therefore, the amount of sodium chloride needed to make this eye solution isotonic with tears is approximately 1.85 grams. Rounding it up to the nearest whole number gives us the answer as 2. Hence, the correct option is 22.
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Explain why gold is found in its unreacted form, as the metal
itself in the Earth.
The unique combination of gold's chemical properties, stability, and the geological processes that occur in the Earth's crust, all contribute to the formation of gold in its unreacted form as the metal itself.
What makes gold found in it's unreacted form?Gold is found in its unreacted or pure form in the Earth's crust because of its chemical properties. Gold is often found in geologically active areas such as fault lines and volcanic fields.
In these regions, high temperatures and pressures cause gold to move in a molten state, eventually leading to subsidence and vein formation.
Therefore, the unique combination of gold's chemical properties, stability, and the geological processes that occur in the Earth's crust, all contribute to the formation of gold in its unreacted form as the metal itself.
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Tienen capacidad de fijar enerjgia luminosa utilizando agua y co2 para transformarlo en carbohidratos
Answer:
las plantas
Explanation:
Las plantas son los seres vivos capaces de transformar energía luminosa utilizando agua y dióxido de carbono (CO₂) en energía química en forma de moléculas llamadas carbohidratos. El proceso a través del cual realizan esto se denomina fotosíntesis, y para ello requieren un pigmento de color verde denominado clorofila, el cual es necesario para captar la energía luminosa proveniente del Sol.
According to the bohr model of the atom, the single electron of a hydrogen atom circles the nucleus?
According to the bohr model of the atom, the single electron of a hydrogen atom circles the nucleus is specific allowed orbits.
What is orbits?Encyclopedic entry. An orbit is a regular, repeating path that one object takes around another object or center of gravity. Orbiting objects, which are called satellites, include planets, moons, asteroids, and manmade devices.An orbit is a regular, repeating path that one object takes around another object or center of gravity. Orbiting objects, which are called satellites, include planets, moons, asteroids, and manmade devices.Objects orbit each other because of gravity. Gravity is the force that exists between any two objects with mass. Every object, from the smallest subatomic particle to the largest star, has mass. The more massive the object, the larger its gravitational pull. Gravitational pull is the amount of force one object exerts on another object.
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why does direction matter please i beg you to help me its in science ill give you brainliest if the answer is right
In science, direction can be important because it can affect the outcome of an experiment.
What is direction?Direction is the process of guiding or instructing someone to a particular destination or goal. It can include giving instructions, leading and pointing out a path to follow, or providing assistance to help a person or group reach a certain destination. Direction can be provided verbally or using visual cues, such as maps or diagrams. It is an essential skill for many professions, such as teaching, management and leadership roles. Direction can also help with problem solving, as it can help to identify the steps needed to reach a desired result.
For example, if you are conducting a test on the effects of wind on a plant, the direction of the wind can have a significant effect on the results of the experiment. If the wind is blowing from the north, it will have a different impact on the plant than if it was blowing from the south. Direction can also be important in physics when looking at the movement of objects, or when understanding the forces that are acting on them.
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Which statement describes the electron sharing between two oxygen atoms?
Thomas Paine, a key figure in the American revolution, once said it is only error and not truth that shrinks from inquiry. What do you think he meant by this?
Thomas Paine once said it is only error and not truth that shrinks from inquiry. He meant that the more you inquire about something, less error and mistakes come from it, and more truth will.
What do you think Thomas Paine meant by this?It means that you can not make a problem worse by inquiring about it but you can only lessen the error within it. Thomas Paine was likely referring to the idea that truth has nothing to fear from examination or investigation, whereas error does. In other words, if a belief or idea is true, it should be able to withstand scrutiny and examination. On the other hand, if a belief is based on error, it will crumble when subject to inquiry.
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the atmospheric pressure in Denver, Colorado, is usually about 84.0 kPa. what is this pressure in atm and torr units?
- The atmospheric pressure in Denver, Colorado, is approximately 0.829 atm.
- The atmospheric pressure in Denver, Colorado, is approximately 627.522 torr.
The atmospheric pressure in Denver, Colorado, is usually about 84.0 kPa. To convert this pressure to atm and torr units, we can use the following conversion factors:
1 atm = 101.325 kPa
1 atm = 760 torr
First, let's convert 84.0 kPa to atm:
Pressure in atm = 84.0 kPa × (1 atm / 101.325 kPa) ≈ 0.829 atm
Therefore, the atmospheric pressure in Denver, Colorado, is approximately 0.829 atm.
Next, let's convert 84.0 kPa to torr:
Pressure in torr = 84.0 kPa × (760 torr / 101.325 kPa) ≈ 627.522 torr
Therefore, the atmospheric pressure in Denver, Colorado, is approximately 627.522 torr.
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The graph represents the change in that occurs when food is cooked over a charcoal grill. Which statement correctly explains the graph?A. The reactants are unlit charcoal that has already released its energy, and the products are charcoal that has already burned.B. The reactants are charcoal that has already burned and released its energy, and the products are unlit charcoal.C. The reactants are unlit charcoal, and the products are charcoal that has already burned and released its energy.D. The reactants are charcoal that has already burned, and the products are unlit charcoal that has already released its energy.
The answer is C.
The reactants are charcoal that is unlit + oxygen and the products are the burnt charcoal + energy.
\(C_xH_y+O_{2\text{ }}\rightarrow CO_2+H_2O\text{ + heat}\)So for every combustion reaction like this one, CxHy is the wood. So before you light the wood, it is actally a reactant together with oxygen, because without oxygen the wood will not burn. So under the influence of heat, wood produces substances like carbon dioxide and heat, the moment you see wood burning it it already producing products, CO2 and heat (which is the fire). This is a combustion reaction.
Combustion reaction is exothermic because it releases energy.